Ocean

A trio of divers off the western coast of Norway had a close encounter with a drifting gelatinous blob — a squid's egg sac as big as an adult human.

Meta description: Probing the bottom of the East China Sea with seismic waves, researchers have discovered a mysterious "pocket" that could contain 50 million tons of greenhouse gases.

Unless climate action is swift and dramatic, future upheaval will be catastrophic.

Scary portrayals of great whites in pop culture might lead some people to wonder if the world would be better off with no sharks at all.

Sometimes people have to learn the hard way that octopuses belong in the ocean — not on your face.

The International Space Station captured a stunning photo of an erupting volcano.

By gathering in groups, these organisms shaped water flows that fed them.

Fishermen in Norway came across a Russian spy late last week, but the interloper wouldn't reveal its mission, and with good reason: It couldn't, because it was a beluga whale.

The tallest ocean waves on Earth will only get bigger in the coming years, researchers expect.

The boat, named the Tara, has given scientists an unprecedented, detailed map of viruses in the marine ecosystem.

Greenland's ice sheet has undergone a stunning reversal in the last 46 years, as a meticulous new study documents.

We're witnessing a catastrophic shift in our planet's sea ice. Here's what the latest chapter means for you.

Stunning new video footage shows great white sharks hunting seals — all from the huge predator's perspective. The sharks were fitted with video cameras that recorded some surprising behaviors.

Like a rainbow, the anus of a comb jelly is a fleeting thing.

The biggest threat to seabirds isn't plastic straws. It's balloons.

A parrotfish in peril won a prominent photo prize.

Photographers from around the world competed to take home the top prizes in the 2019 Underwater Photographer of the Year contest.

When will the end come for the oceans?

The discovery could help explain why the Earth isn't a huge ball of ice.